Duo Security vs Mimecast: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Duo Security and Mimecast side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, Duo Security leads on a free plan. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Duo Security
Multi-factor authentication for enterprises
Best for you if:
- • You want a free tier before you commit
Mimecast
AI-powered human risk management and advanced email security for modern organizations.
Best for you if:
- • You want unified platform for email security, human risk, and insider risk management
| At a Glance | Duo Security | Mimecast |
|---|---|---|
Starts at | Free plan, paid from $3/user/mo, billed monthly Essentials plan | Not published |
Category | Identity & Access Security | Security Email |
Rating | 4.6/5 Capterra 4.7 · G2 4.5 1,051 reviews | 4.4/5 G2 4.4 · Capterra 4.3 440 reviews |
Free plan | Yes | No |
Choose Duo Security or Mimecast?
Choose Duo Security if
- You want a free tier before you commit
- You want enterprise MFA leader
- You want good security
- You work in identity & access, not security
Choose Mimecast if
- You want unified platform for email security, human risk, and insider risk management
- You want leverages advanced AI and decades of threat intelligence for superior protection
- You work in security, not identity & access
In-Depth Analysis
Duo Security
Multi-factor authentication for enterprises
Duo Security's pricing is fair, offering a generous free tier for up to 10 users.
Strengths
- Pro: Enterprise MFA leader
- Pro: Good security
- Pro: Easy setup
- Pro: Many integrations
- Pro: Cisco backing
Weaknesses
- Con: Expensive
- Con: Cisco pricing complexity
- Con: Per-user costs
- Con: UI dated
- Con: Better free alternatives
Key features
Mimecast
AI-powered human risk management and advanced email security for modern organizations.
Strengths
- Pro: Unified platform for email security, human risk, and insider risk management.
- Pro: Leverages advanced AI and decades of threat intelligence for superior protection.
- Pro: Recognized as a leader in Gartner Magic Quadrants for Email Security and Digital Communications Governance.
- Pro: Offers rapid deployment and actionable insights for insider risk management without complex policy setup.
- Pro: Reduces shadow AI use and promotes secure adoption of AI tools.
Weaknesses
- Con: No free tier available for evaluation.
- Con: Requires integration with existing systems, which might have an initial setup phase.
Key features
Plans and prices: Duo Security vs Mimecast
| Tool | Plans and prices | Source |
|---|---|---|
| Duo Security |
| duo.com/pricing read Oct 31, 2026 |
| Mimecast | No plan prices on file | mimecast.com |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Duo Security pricing and Mimecast pricing.
Key Takeaways
Duo Security
- Has a free plan
Mimecast
- Choose if you want AI-powered human risk management and advanced email security for modern organizations
What the data shows
On the data below, Duo Security leads on a free plan. We do not name an overall winner for this pair.
- User ratings are within 0.2 points (4.6/5 from 1,051 reviews for Duo Security, 4.4/5 from 440 reviews for Mimecast).
- Duo Security starts at $3/user/mo, billed monthly; Mimecast has no public paid plan price on file.
- Only Duo Security has a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Duo Security and Mimecast compare in 2026?
On the data below, Duo Security leads on a free plan. We do not name an overall winner for this pair. User ratings are within 0.2 points (4.6/5 from 1,051 reviews for Duo Security, 4.4/5 from 440 reviews for Mimecast). Duo Security starts at $3/user/mo, billed monthly; Mimecast has no public paid plan price on file. Only Duo Security has a free plan.
What are Duo Security and Mimecast used for?
Duo Security: Multi-factor authentication for enterprises. Mimecast: AI-powered human risk management and advanced email security for modern organizations.
What does Duo Security cost vs Mimecast?
Duo Security's cheapest paid plan is Essentials at $3/user/mo, billed monthly; it also has a free plan. Mimecast has no public paid-plan price on file. Prices read on the vendors' pricing pages, latest check Oct 31, 2026.
What's the main difference between Duo Security and Mimecast?
Duo Security's main strength: enterprise MFA leader. Mimecast's main strength: unified platform for email security, human risk, and insider risk management.